PRIM PHYSICS SHAPE TYPE

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/LSL

PRIM_PHYSICS_SHAPE_TYPE

Description

Constant: integer PRIM_PHYSICS_SHAPE_TYPE = 30;

The integer constant PRIM_PHYSICS_SHAPE_TYPE has the value 30

Used to set the type of shape the physics engine should use for the prim. This is primarily used to do Physics Optimization.

llSetPrimitiveParams

[ PRIM_PHYSICS_SHAPE_TYPE, integer type ]

• integer

type

–

PRIM_PHYSICS_SHAPE_* flag

When used with llSetPrimitiveParams & llSetLinkPrimitiveParams

llGetPrimitiveParams

llGetPrimitiveParams([ PRIM_PHYSICS_SHAPE_TYPE ]);

Returns the list [ integer type ]

• integer

type

–

PRIM_PHYSICS_SHAPE_* flag

type Flags	V	Description			Notes
PRIM_PHYSICS_SHAPE_PRIM	0	The visible shape of the prim determines its physics-shape			default for all non-mesh prims
PRIM_PHYSICS_SHAPE_CONVEX	2	Use the convex hull formulas for generating the prim's physics-shape			default for all mesh prims
PRIM_PHYSICS_SHAPE_NONE	1	The prim will not contribute to the object's physics-shape			This cannot be applied to the root prim or avatars. This prim has no physics representation at all. Like phantom objects, it will not collide with avatars or other objects. Unlike phantom prims, it will also pass freely through the terrain when the parent object is physical. Like volume detect it doesn't collide with terrain. Unlike volume detect, it will not register collision events.

Caveats

Related Articles

Functions

•	llGetPrimitiveParams
•	llGetLinkPrimitiveParams
•	llSetPrimitiveParams
•	llSetLinkPrimitiveParams
•	llSetLinkPrimitiveParamsFast

Articles

•	Physics Optimization
•	Best practices for creating efficient collision volumes	–	A really good article that explains how collisions work.

Notes

Modern physics engines achieve real-time results (as opposed to slower than real-time results) by approximating and simplifying the shapes. This means the shape that client displays on the screen is much more complicated than the shape the physics engine works with (with the exception of basic shapes like cubes or prisms). This flag gives the scripter some control over how the prim is treated by the physics engine.

Deep Notes

History

• Introduced in Second Life RC LeTigre 11.09.09.240509, September 9, 2011
• SLUniverse:Future physics functions tease

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Signature
integer PRIM_PHYSICS_SHAPE_TYPE = 30;